Start Python 2.1 bytecode decompile

uncompyle6/parsers/parse21.py

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+#  Copyright (c) 2016 Rocky Bernstein
+#  Copyright (c) 2000-2002 by hartmut Goebel <hartmut@goebel.noris.de>
+
+from spark_parser import DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
+from uncompyle6.parser import PythonParserSingle
+from uncompyle6.parsers.parse22 import Python22Parser
+
+class Python21Parser(Python22Parser):
+
+    def __init__(self, debug_parser=PARSER_DEFAULT_DEBUG):
+        super(Python22Parser, self).__init__(debug_parser)
+        self.customized = {}
+
+    def p_forstmt21(self, args):
+        """
+        _for    ::= LOAD_CONST FOR_LOOP
+        forstmt ::= SETUP_LOOP expr _for designator
+                    return_stmts
+                    POP_BLOCK COME_FROM
+        forstmt ::= SETUP_LOOP expr _for designator
+                    l_stmts_opt _jump_back
+                    POP_BLOCK COME_FROM
+        """
+
+    def p_import21(self, args):
+        '''
+        # These are be relevant for only Python 2.0 and 2.1
+	stmt ::= importstmt2
+        stmt ::= importfrom2
+	stmt ::= importstar
+	stmt ::= import_as_cont
+	stmt ::= import_as
+        importfrom2    ::= LOAD_CONST IMPORT_NAME importlist2 POP_TOP
+        importlist2    ::= importlist2 import_as
+        importstmt2    ::= LOAD_CONST IMPORT_NAME designator
+        importstmt2    ::= LOAD_CONST IMPORT_NAME IMPORT_FROM designator POP_TOP
+        importstar     ::= LOAD_CONST LOAD_CONST IMPORT_NAME_CONT IMPORT_STAR
+        importfrom     ::= LOAD_CONST LOAD_CONST IMPORT_NAME_CONT importlist2 POP_TOP
+        import_as      ::= LOAD_CONST IMPORT_NAME LOAD_ATTR designator
+        import_as      ::= LOAD_CONST IMPORT_NAME LOAD_ATTR LOAD_ATTR designator
+        import_as      ::= LOAD_CONST IMPORT_NAME LOAD_ATTR LOAD_ATTR LOAD_ATTR designator
+        import_as      ::= IMPORT_FROM designator
+        import_as_cont ::= LOAD_CONST IMPORT_NAME_CONT designator
+        import_as_cont ::= IMPORT_NAME_CONT load_attrs designator
+        '''
+
+class Python21ParserSingle(Python22Parser, PythonParserSingle):
+    pass
+
+if __name__ == '__main__':
+    # Check grammar
+    p = Python21Parser()
+    p.checkGrammar()
+    p.dumpGrammar()
+
+# local variables:
+# tab-width: 4